3492742

Information

• Patent Grant
• 3492742

• References
• Source

• Patent Number

  3,492,742

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1970
  56 years ago

• CPC

  • F41G3/2616 - using a light emitting device
  • F41J5/02 - Photo-electric hit-detector systems

• US Classifications

  • 434 - Education and demonstration